diff --git a/index.html b/index.html
index 07a4e7c..9527614 100644
--- a/index.html
+++ b/index.html
@@ -23,6 +23,9 @@
       <li class="nav-item">
         <a class="nav-link" id="link_research" onclick="set_tab('research')">Research</a>
       </li>
+      <li class="nav-item">
+        <a class="nav-link" id="link_trading" onclick="set_tab('trading')">Trading</a>
+      </li>
       <li class="nav-item">
         <a class="nav-link" id="link_options" onclick="set_tab('options')">Options</a>
       </li>
@@ -61,6 +64,8 @@
       <p>Researches:</p>
       <div id="researches"></div>
     </div>
+    <div id="tab_trading">
+    </div>
     <div id="tab_options">
       <button onclick="reset()">Reset</button>
     </div>
diff --git a/main.js b/main.js
index 9efc85d..695bf0c 100644
--- a/main.js
+++ b/main.js
@@ -7,7 +7,6 @@ var numResources=0;
 var buildings={};
 var unlockedBuildings=[];
 var has_shelter=false;
-var research_enabled=false;
 var researches={};
 var unlockedResearch=[];
 var research_points=0;
@@ -41,7 +40,6 @@ var all_buildings={
       metal:15
     },
     build_effects:{
-      research_enabled:true,
       max_research_points:150
     }
   },
@@ -52,6 +50,12 @@ var all_buildings={
     build_effects: {
       max_resources:50
     }
+  },
+  "trading post":{
+    ings:{
+      wood:100,
+      metal:50
+    }
   }
 };
 var worker_resource={
@@ -59,25 +63,35 @@ var worker_resource={
   miner:"metal",
   scientist:"research_points"
 };
-var worker_rate=0.5;
+var worker_rate=0.1;
 var all_researches={
-  "Faster Workers":{
-    maxLevel:3,
+  "Faster workers":{
+    maxLevel:6,
     cost:100,
     effects:{
-      worker_rate:0.5
+      worker_rate:0.2
     }
   }
 };
 var multiplier=1.17;
+var trading_rates={
+  wood:1,
+  metal:10
+};
+function tenthRound(number) {
+  return Math.round(number*10)/10;
+}
 function updateShown() {
   var has_resources=Object.keys(resources).length>0;
+  var has_lab=Object.keys(buildings).includes("lab");
+  var has_tpost=Object.keys(buildings).includes("trading post");
   $(".shelter_required").toggle(has_shelter);
   $("#link_population").toggle(has_shelter);
   $(".resources_required").toggle(has_resources);
   $("#link_buildings").toggle(has_resources);
-  $("#link_research").toggle(research_enabled);
-  $(".research_required").toggle(research_enabled);
+  $("#link_research").toggle(has_lab);
+  $(".research_required").toggle(has_lab);
+  $("#link_trading").toggle(has_tpost);
 }
 function incResource(name,amount=1) {
   if (name=="research_points") {
@@ -89,10 +103,11 @@ function incResource(name,amount=1) {
       research_points-=amount;
       return;
     }
+    research_points=tenthRound(research_points);
     updateResearchPointInfo();
     updateResearchButtons();
   } else {
-    if (numResources>maxResources) {
+    if (numResources>=maxResources) {
       return;
     }
     if (resources[name]) {
@@ -105,21 +120,25 @@ function incResource(name,amount=1) {
       decResource(name,amount);
       return;
     }
+    resources[name]=tenthRound(resources[name]);
+    numResources=tenthRound(numResources);
     updateResourceInfo();
-
     updateCraftButtons();
+    updateTradingButtons();
   }
   updateShown();
 }
-function decResource(name,amount) {
+function decResource(name,amount=1) {
   if (resources[name]<amount) {
     return;
   }
   numResources-=amount;
   resources[name]-=amount;
+  resources[name]=tenthRound(resources[name]);
+  numResources=tenthRound(numResources);
   updateResourceInfo();
-
   updateCraftButtons();
+  updateTradingButtons();
 }
 function incBuilding(name) {
   if (buildings[name]) {
@@ -135,12 +154,8 @@ function incBuilding(name) {
       updatePopulationInfo();
       updateWorkerInfo();
     }
-    if (effect=="research_enabled") {
-      research_enabled=effects[effect];
-    }
     if (effect=="max_resources") {
       maxResources+=effects[effect];
-
     }
     if (effect=="max_research_points") {
       max_research_points+=effects[effect];
@@ -178,8 +193,8 @@ function craft(name) {
       decResource(ing,amount);
     }
     updateResourceInfo();
-    updateCraftButtons();
     incBuilding(name);
+    updateCraftButtons();
   }
 }
 function capitalizeFirst(str) {
@@ -203,6 +218,9 @@ function updateBuildingInfo() {
 function updateCraftButtons() {
   $("#craft_buttons").html("");
   for (var name in all_buildings) {
+    if (name=="trading post" && buildings["trading post"]>0) {
+      continue;
+    }
     var ings=buildingCost(name);
     var show=true;
     var disabled=false;
@@ -239,9 +257,9 @@ function updateCraftButtons() {
         i++;
       }
       if (disabled) {
-        $("#craft_buttons").append("<button disabled onclick=craft(\""+name+"\")>Craft a "+btext+"</button><br>");
+        $("#craft_buttons").append("<button disabled onclick=\"craft('"+name+"')\">Craft a "+btext+"</button><br>");
       } else {
-        $("#craft_buttons").append("<button onclick=craft(\""+name+"\")>Craft a "+btext+"</button><br>");
+        $("#craft_buttons").append("<button onclick=\"craft('"+name+"')\">Craft a "+btext+"</button><br>");
       }
     }
   }
@@ -327,7 +345,7 @@ function fire(type) {
 function autoInc() {
   for (var worker in workers) {
     worker_amount=workers[worker];
-    amount=worker_rate*worker_amount;
+    var amount=worker_rate*worker_amount;
     if (amount>0) {
       if (worker=="scientist") {
         var usedMetal=Math.ceil(worker_amount*0.4);
@@ -353,7 +371,6 @@ function save() {
     buildings:buildings,
     unlockedBuildings:unlockedBuildings,
     has_shelter:has_shelter,
-    research_enabled:research_enabled,
     researches:researches,
     unlockedResearch:unlockedResearch,
     research_points:research_points,
@@ -376,7 +393,6 @@ function load() {
   buildings=gamestate.buildings;
   unlockedBuildings=gamestate.unlockedBuildings;
   has_shelter=gamestate.has_shelter;
-  research_enabled=gamestate.research_enabled;
   researches=gamestate.researches;
   unlockedResearch=gamestate.unlockedResearch;
   research_points=gamestate.research_points;
@@ -401,7 +417,6 @@ function init() {
     buildings={};
     unlockedBuildings=[];
     has_shelter=false;
-    research_enabled=false;
     researches={};
     unlockedResearch=[];
     research_points=0;
@@ -421,8 +436,8 @@ function init() {
   updateResearchPointInfo();
   updateResearchButtons();
   updateResearchInfo();
-
   applyResearches();
+  updateTradingButtons();
 }
 function set_tab(tab) {
   if ($("#link_"+tab).is(":visible")) {
@@ -450,6 +465,34 @@ function updateResearchInfo() {
     $("#researches").append("<p>"+name+": Level "+researches[name]+"</p>");
   }
 }
+function canSell(name,amount=1) {
+  var goldGotten=trading_rates[name]*amount;
+  var spacesNeeded=goldGotten-amount;
+  return maxResources-numResources>=spacesNeeded;
+}
+function buy(name,amount=1) {
+  decResource("gold",trading_rates[name]*amount);
+  incResource(name,amount);
+}
+function sell(name,amount=1) {
+  decResource(name,amount);
+  incResource("gold",trading_rates[name]*amount);
+}
+function updateTradingButtons() {
+  $("#tab_trading").html("");
+  for (var name in trading_rates) {
+    var rate=trading_rates[name];
+    $("#tab_trading").append("<p>"+capitalizeFirst(name)+": "+rate+" gold"+"</p>");
+    $("#tab_trading").append("<button id=sell1 onclick=\"sell('"+name+"')\">Sell 1</button>&nbsp");
+    $("#tab_trading").append("<button id=buy1 onclick=\"buy('"+name+"')\">Buy 1</button><br>");
+    $("#tab_trading").append("<button id=sell10 onclick=\"sell('"+name+"',10)\">Sell 10</button>&nbsp");
+    $("#tab_trading").append("<button id=buy10 onclick=\"buy('"+name+"',10)\">Buy 10</button>");
+    $("#tab_trading #sell1").prop("disabled",!canSell(name)).removeAttr("id");
+    $("#tab_trading #buy1").prop("disabled",resources["gold"]<trading_rates[name]).removeAttr("id");
+    $("#tab_trading #sell10").prop("disabled",!canSell(name,10)).removeAttr("id");
+    $("#tab_trading #buy10").prop("disabled",resources["gold"]<trading_rates[name]*10).removeAttr("id");
+  }
+}
 $(document).ready(function() {
   init();
   $(window).on("unload",function(e){